50 Best Bob Dylan Covers from Paste HERE
My favorites from this list:
Van Morrison/Them's cover of "It's All Over Now Baby Blue" (HERE_
Sam Cooke doing "Blowin in the Wind" (HERE)
Tracy Chapman doing "The Times They Are A-Changin" (HERE)
Indigo Girls doing "Tangled up in Blue" (HERE)

The Swell Season, live in concert from the Newport Folk Festival in 2010. HERE